A) Oxygen
B) Hydrogen
C) Carbon dioxide
D) Nitrogen
Answer: C) Carbon dioxide
Category: Everyday Science
Speed of light in vacuum is approximately:
A) 3 × 10⁵ m/s
B) 3 × 10⁸ m/s
C) 3 × 10⁶ m/s
D) 3 × 10³ m/s
Answer: B) 3 × 10⁸ m/s
Which planet has the highest number of moons?
A) Saturn
B) Jupiter
C) Mars
D) Uranus
Answer: A) Saturn (recent data)
Which device is used to measure atmospheric pressure?
A) Thermometer
B) Barometer
C) Hygrometer
D) Altimeter
Answer: B) Barometer
The ozone layer is found in which part of the atmosphere?
A) Troposphere
B) Stratosphere
C) Mesosphere
D) Exosphere
Answer: B) Stratosphere
What is the antonym of “Intransigent”?
(A) Energetic
(B) Obedient
(C) Faithful
(D) Flexible
Correct answer: (D) Flexible
Looking at the mirror, you notice that your image appears shorter. What type of mirror is this?
(A) Plane
(B) Concave
(C) Convex
(D) (A) or (B)
The answer is: (C) Convex
Looking at the mirror, you notice that your image appears enlarged. What type of mirror is this?
(A) Plane
(B) Concave
(C) Convex
(D) (A) or (C)
The answer is: (B) Concave
Which from the following has the shortest wavelengths?
(A) Light
(B) X-Rays
(C) Infrared rays
(D) Gamma rays
The answer is: (D) Gamma rays
Which waves are commonly produced by oscillating electric circuits?
(A) Microwaves
(B) Radio waves
(C) Infrared rays
(D) X-Rays
The answer is: (A) Microwaves